/*

    jQuery Tags Input Plugin 1.3.1

    Copyright (c) 2011 XOXCO, Inc

    Documentation for this plugin lives here:
    http://xoxco.com/clickable/jquery-tags-input

    Licensed under the MIT license:
    http://www.opensource.org/licenses/mit-license.php

    ben@xoxco.com

*/

(function($) {

    var delimiter = new Array();
    var tags_callbacks = new Array();

    $.fn.addTag = function(value,options) {
            var options = jQuery.extend({focus:false,callback:true},options);
            this.each(function() {
                id = $(this).attr('id');

                var tagslist = $(this).val().split(delimiter[id]);
                if (tagslist[0] == '') {
                    tagslist = new Array();
                }

                value = jQuery.trim(value);

                if (options.unique) {
                    skipTag = $(tagslist).tagExist(value);
                } else {
                    skipTag = false;
                }

                if (value !='' && skipTag != true) {
                    $('<span>').addClass('tag').append(
                        $('<span>').text(value).append('&nbsp;&nbsp;'),
                        $('<a>', {
                            href  : '#',
                            title : 'Removing tag',
                            text  : 'x'
                        }).click(function () {
                            return $('#' + id).removeTag(escape(value));
                        })
                    ).insertBefore('#' + id + '_addTag');

                    tagslist.push(value);

                    $('#'+id+'_tag').val('');
                    if (options.focus) {
                        $('#'+id+'_tag').focus();
                    } else {
                        $('#'+id+'_tag').blur();
                    }

                    if (options.callback && tags_callbacks[id] && tags_callbacks[id]['onAddTag']) {
                        var f = tags_callbacks[id]['onAddTag'];
                        f(value);
                    }
                    if(tags_callbacks[id] && tags_callbacks[id]['onChange'])
                    {
                        var i = tagslist.length;
                        var f = tags_callbacks[id]['onChange'];
                        f($(this), tagslist[i]);
                    }
                }
                $.fn.tagsInput.updateTagsField(this,tagslist);

            });

            return false;
        };

    $.fn.removeTag = function(value) {
            value = unescape(value);
            this.each(function() {
                id = $(this).attr('id');

                var old = $(this).val().split(delimiter[id]);


                $('#'+id+'_tagsinput .tag').remove();
                str = '';
                for (i=0; i< old.length; i++) {
                    if (old[i]!=value) {
                        str = str + delimiter[id] +old[i];
                    }
                }

                $.fn.tagsInput.importTags(this,str);

                if (tags_callbacks[id] && tags_callbacks[id]['onRemoveTag']) {
                    var f = tags_callbacks[id]['onRemoveTag'];
                    f(value);
                }
            });

            return false;
        };

    $.fn.tagExist = function(val) {
        if (jQuery.inArray(val, $(this)) == -1) {
          return false; /* Cannot find value in array */
        } else {
          return true; /* Value found */
        }
    };

    // clear all existing tags and import new ones from a string
    $.fn.importTags = function(str) {
        $('#'+id+'_tagsinput .tag').remove();
        $.fn.tagsInput.importTags(this,str);
    }

    $.fn.tagsInput = function(options) {
    var settings = jQuery.extend({
      interactive:true,
      defaultText:'add a tag',
      minChars:0,
      autocomplete: {selectFirst: false },
      'hide':true,
      'delimiter':',',
      'unique':true,
      removeWithBackspace:true,
      placeholderColor:'#666666'
    },options);

        this.each(function() {
            if (settings.hide) {
                $(this).hide();
            }

            id = $(this).attr('id')

            data = jQuery.extend({
                pid:id,
                real_input: '#'+id,
                holder: '#'+id+'_tagsinput',
                input_wrapper: '#'+id+'_addTag',
                fake_input: '#'+id+'_tag'
            },settings);


            delimiter[id] = data.delimiter;

            if (settings.onAddTag || settings.onRemoveTag || settings.onChange) {
                tags_callbacks[id] = new Array();
                tags_callbacks[id]['onAddTag'] = settings.onAddTag;
                tags_callbacks[id]['onRemoveTag'] = settings.onRemoveTag;
                tags_callbacks[id]['onChange'] = settings.onChange;
            }

            var markup = '<div id="'+id+'_tagsinput" class="tagsinput"><div id="'+id+'_addTag">';

            if (settings.interactive) {
                markup = markup + '<input id="'+id+'_tag" value="" data-default="'+settings.defaultText+'" />';
            }

            markup = markup + '</div><div class="tags_clear"></div></div>';

            $(markup).insertAfter(this);

            $(data.holder).css('width',settings.width);
            $(data.holder).css('height',settings.height);

            if ($(data.real_input).val()!='') {
                $.fn.tagsInput.importTags($(data.real_input),$(data.real_input).val());
            }
            if (settings.interactive) {
                $(data.fake_input).val($(data.fake_input).attr('data-default'));
                $(data.fake_input).css('color',settings.placeholderColor);

                $(data.holder).bind('click',data,function(event) {
                    $(event.data.fake_input).focus();
                });

                $(data.fake_input).bind('focus',data,function(event) {
                    if ($(event.data.fake_input).val()==$(event.data.fake_input).attr('data-default')) {
                        $(event.data.fake_input).val('');
                    }
                    $(event.data.fake_input).css('color','#000000');
                });

                if (settings.autocomplete_url != undefined) {
                  autocomplete_options = {source: settings.autocomplete_url};
                  for (attrname in settings.autocomplete) {
                    autocomplete_options[attrname] = settings.autocomplete[attrname];
                  }

                  if (jQuery.Autocompleter !== undefined) {
                    $(data.fake_input).autocomplete(settings.autocomplete_url, settings.autocomplete);
                    $(data.fake_input).bind('result',data,function(event,data,formatted) {
              if (data) {
                d = data + "";
                $(event.data.real_input).addTag(d,{focus:true,unique:(settings.unique)});
              }
            });
                  } else if (jQuery.ui.autocomplete !== undefined) {
                      $(data.fake_input).autocomplete(autocomplete_options);
                      $(data.fake_input).bind('autocompleteselect',data,function(event,ui) {
                      $(event.data.real_input).addTag(ui.item.value,{focus:true,unique:(settings.unique)});
                      return false;
            });
                  }


                } else {
                        // if a user tabs out of the field, create a new tag
                        // this is only available if autocomplete is not used.
                        $(data.fake_input).bind('blur',data,function(event) {
                            var d = $(this).attr('data-default');
                            if ($(event.data.fake_input).val()!='' && $(event.data.fake_input).val()!=d) {
                                if( (event.data.minChars <= $(event.data.fake_input).val().length) && (!event.data.maxChars || (event.data.maxChars >= $(event.data.fake_input).val().length)) )
                                    $(event.data.real_input).addTag($(event.data.fake_input).val(),{focus:true,unique:(settings.unique)});
                            } else {
                                $(event.data.fake_input).val($(event.data.fake_input).attr('data-default'));
                                $(event.data.fake_input).css('color',settings.placeholderColor);
                            }
                            return false;
                        });

                }
                // if user types a comma, create a new tag
                $(data.fake_input).bind('keypress',data,function(event) {
                    if (event.which==event.data.delimiter.charCodeAt(0) || event.which==13 ) {
                        if( (event.data.minChars <= $(event.data.fake_input).val().length) && (!event.data.maxChars || (event.data.maxChars >= $(event.data.fake_input).val().length)) )
                            $(event.data.real_input).addTag($(event.data.fake_input).val(),{focus:true,unique:(settings.unique)});

                        return false;
                    }
                });
                //Delete last tag on backspace
                data.removeWithBackspace && $(data.fake_input).bind('keydown', function(event)
                {
                    if(event.keyCode == 8 && $(this).val() == '')
                    {
                         event.preventDefault();
                         var last_tag = $(this).closest('.tagsinput').find('.tag:last').text();
                         var id = $(this).attr('id').replace(/_tag$/, '');
                         last_tag = last_tag.replace(/[\s]+x$/, '');
                         $('#' + id).removeTag(escape(last_tag));
                         $(this).trigger('focus');
                    };
                });
                $(data.fake_input).blur();
            } // if settings.interactive
            return false;
        });

        return this;

    };

    $.fn.tagsInput.updateTagsField = function(obj,tagslist) {
        id = $(obj).attr('id');
        $(obj).val(tagslist.join(delimiter[id]));
    };

    $.fn.tagsInput.importTags = function(obj,val) {
        $(obj).val('');
        id = $(obj).attr('id');
        var tags = val.split(delimiter[id]);
        for (i=0; i<tags.length; i++) {
            $(obj).addTag(tags[i],{focus:false,callback:false});
        }
        if(tags_callbacks[id] && tags_callbacks[id]['onChange'])
        {
            var f = tags_callbacks[id]['onChange'];
            f(obj, tags[i]);
        }
    };

})(jQuery);
